//
//  DelLetter.m
//  WhatToEat
//
//  Created by Mac on 15/4/2.
//  Copyright (c) 2015年 Mac. All rights reserved.
//

#import "DelLetter.h"

@implementation DelLetter

+(NSString *)delLetter:(NSString *)s{

    
    
    NSString *pureNumbers = [[s componentsSeparatedByCharactersInSet:[[NSCharacterSet characterSetWithCharactersInString:@"0123456789"] invertedSet]] componentsJoinedByString:@""];

    return pureNumbers;
}

@end
